tofsee | fe44ad191da19b523ade85ef88425e5ba39e2965e9decbb41bade4bf8bf31742

General

Target

96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe
Size

13.8MB
MD5

96d4ea2c2a2c7484a199246c3cb8db41
SHA1

5c0f0208252b1a02b7ea14cd87b50def1e705da4
SHA256

fe44ad191da19b523ade85ef88425e5ba39e2965e9decbb41bade4bf8bf31742
SHA512

d923c175e3e504e13f5bb78065b561c84e974fad8c1a2888566b114c7e2fe55a1fef0bd20ded2ffdd530e994b63fbc983cf90731c53ced9ce05c04d63c32f8f2
SSDEEP

6144:/JuDszifRNFwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwT:hubf7

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2524	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\bgwbtdzs\ImagePath = "C:\\Windows\\SysWOW64\\bgwbtdzs\\uwriztat.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1396	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2884	uwriztat.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2884 set thread context of 1396	2884	uwriztat.exe	94

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2108	sc.exe
876	sc.exe
4212	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uwriztat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4084 wrote to memory of 4280	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	83
PID 4084 wrote to memory of 4280	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	83
PID 4084 wrote to memory of 4280	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	83
PID 4084 wrote to memory of 3956	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	85
PID 4084 wrote to memory of 3956	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	85
PID 4084 wrote to memory of 3956	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	85
PID 4084 wrote to memory of 2108	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	87
PID 4084 wrote to memory of 2108	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	87
PID 4084 wrote to memory of 2108	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	87
PID 4084 wrote to memory of 876	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	89
PID 4084 wrote to memory of 876	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	89
PID 4084 wrote to memory of 876	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	89
PID 4084 wrote to memory of 4212	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	91
PID 4084 wrote to memory of 4212	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	91
PID 4084 wrote to memory of 4212	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	91
PID 2884 wrote to memory of 1396	2884	uwriztat.exe	94
PID 2884 wrote to memory of 1396	2884	uwriztat.exe	94
PID 2884 wrote to memory of 1396	2884	uwriztat.exe	94
PID 2884 wrote to memory of 1396	2884	uwriztat.exe	94
PID 2884 wrote to memory of 1396	2884	uwriztat.exe	94
PID 4084 wrote to memory of 2524	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	95
PID 4084 wrote to memory of 2524	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	95
PID 4084 wrote to memory of 2524	4084	96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe	95

C:\Users\Admin\AppData\Local\Temp\96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4084
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bgwbtdzs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uwriztat.exe" C:\Windows\SysWOW64\bgwbtdzs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bgwbtdzs binPath= "C:\Windows\SysWOW64\bgwbtdzs\uwriztat.exe /d\"C:\Users\Admin\AppData\Local\Temp\96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bgwbtdzs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bgwbtdzs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4212
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2524

C:\Windows\SysWOW64\bgwbtdzs\uwriztat.exe
C:\Windows\SysWOW64\bgwbtdzs\uwriztat.exe /d"C:\Users\Admin\AppData\Local\Temp\96d4ea2c2a2c7484a199246c3cb8db41_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1396

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\uwriztat.exe

Filesize
14.5MB

MD5
16096ad5c9faeadf5dcec22ae0c35800

SHA1
4d234443b361635c8ec11026966122159ac7f770

SHA256
cef1c2b45a04ac0418966607a77517928e311f97c76ccaeed5bc017b26601c61

SHA512
c2ed1f97188de4aeb68c77ec8ed3260a77253aeb78c5a348fefb34da5d8e5b56287d038ac26fba0e9b2cc9220acd03f157bccf755be5ab97fbb6496f2716033a

Download Submit
memory/1396-8-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/1396-12-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/1396-14-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/1396-15-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/1396-16-0x0000000000A70000-0x0000000000A85000-memory.dmp

Filesize
84KB

Download
memory/2884-9-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2884-6-0x0000000000740000-0x0000000000741000-memory.dmp

Filesize
4KB

Download
memory/4084-2-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/4084-1-0x0000000000530000-0x0000000000531000-memory.dmp

Filesize
4KB

Download
memory/4084-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4084-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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